158503747 has 4 divisors (see below), whose sum is σ = 159751936. Its totient is φ = 157255560.

The previous prime is 158503727. The next prime is 158503771. The reversal of 158503747 is 747305851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747305851 = 173 ⋅4319687.

It is a cyclic number.

It is not a de Polignac number, because 158503747 - 2⁷ = 158503619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158503727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623904 + ... + 624157.

It is an arithmetic number, because the mean of its divisors is an integer number (39937984).

Almost surely, 2^158503747 is an apocalyptic number.

158503747 is a deficient number, since it is larger than the sum of its proper divisors (1248189).

158503747 is a wasteful number, since it uses less digits than its factorization.

158503747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248188.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 158503747 is about 12589.8271235152. The cubic root of 158503747 is about 541.1859474718.

The spelling of 158503747 in words is "one hundred fifty-eight million, five hundred three thousand, seven hundred forty-seven".